#include <iostream>

using namespace std;

int add(int a, int b)
{
        return a + b;
}

int add(int a, int b, int c)
{
        return a + b + c;
}

int main()
{
        int a;

        a = add(3, 6);
        cout << "a = " << a << endl;

        a = add(3,4,5);
        cout << "a = " << a << endl;

        return 0;
}
